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7 papers · 1 filter
On the construction of certain 6-dimensional symplectic manifolds with Hamiltonian circle actions
Hui Li
Let be a connected, compact 6-dimensional symplectic manifold equipped with a semi-free Hamiltonian action such that the fixed point set consists of isolated points…
Neutrino Data, CP violation and Cosmological Implications
M. N. Rebelo
Recent experimental data provides evidence for neutrino masses and leads to the possibility of leptonic mixing and CP violation. In this work special attention is dedicated to CP v…
Kinetics of Particles in Relativistic Collisionless Shocks
Mikhail V. Medvedev, Luis O. Silva, Ricardo A. Fonseca +2
Charged plasma particles form an anisotropic counter-streaming distribution at the front of a shock. In the near- and ultra-relativistic regimes, Weibel (or two-stream) instability…
Dirac operator coupled to instantons on positive definite 4 manifolds
Joao P Santos
We study the moduli space of instantons on a simply connected positive definite four manifold by analyzing the classifying map of the index bundle of a family of Dirac operators pa…
The effect of nonlocal confining kernels on magnetic chiral condensates
R. Gonzalez Felipe, G. M. Marques, J. E. Ribeiro
The physics of spontaneous chiral symmetry breaking in the case of the simultaneous presence of a magnetic field and a fermionic quartic interaction is discussed for both local and…
Interplay of disorder and magnetic field in the superconducting vortex state
J. Lages, P. D. Sacramento, Z. Tesanovic
We calculate the density of states of an inhomogeneous superconductor in a magnetic field where the positions of vortices are distributed completely at random. We consider both the…